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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from cve-intel.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown (last checked 2026-10-21).
Scans untrusted text, HTML, emails, MCP responses, or A2A payloads for hidden prompt injections and jailbreak attempts, returning sanitized output.
Price / call$0.005
Success—
StatusUnknown
How this service works
Scans untrusted web pages, emails, MCP responses, or A2A payloads for hidden prompt injections and returns sanitized text. (Live x402 v2, IETF MPP & MCP endpoint at https://cve-intel.agentdiet.dev/v1/indirect-injection-guard)
Output
Returns a structured object indicating whether prompt injection or jailbreak payloads were detected in the input text, along with sanitized text safe for downstream LLM or agent consumption. May include threat classification, confidence signals, and the cleaned version of the input.
Example use cases
Guarding agent from malicious web scrapes
“I just scraped this webpage to feed into my research agent, but before you pass it along, scan the raw HTML for any hidden prompt injection or jailbreak instructions embedded in it.”
Sanitizing MCP tool responses
“My agent just got back a response from an external MCP tool — can you run it through the indirect injection firewall before the agent acts on it? I don't trust the source.”
Filtering inbound emails for AI pipelines
“I'm building an AI email triage assistant that reads customer emails automatically. Scan this email body for any hidden instructions that could hijack my agent's behavior before it processes the message.”
Technical details
Endpoint
GEThttps://cve-intel.agentdiet.dev/v1/indirect-injection-guard?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent pipeline ingests content from untrusted external sources — web scrapes, user-submitted text, emails, MCP tool outputs, or A2A messages — and you need to detect and strip hidden prompt injection or jailbreak payloads before they reach your LLM. Prefer this over generic content moderation tools when the specific threat model is adversarial prompt injection targeting AI agents rather than general toxicity or spam.
Side effects
- Empty or missing 'text' parameter returns a 400 validation error
- Extremely long payloads may be truncated or rejected
- Payment failure via x402 returns HTTP 402, blocking the scan
- Ambiguous or highly obfuscated injections may evade detection (false negatives)
- Non-text binary content passed as text may cause parsing errors
- Rate limiting or SLA breach returns 429 or 503
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| textrequired | string | Untrusted text, HTML, or tool output to scan for hidden prompt injection or jailbreak payloads |
Output
Schema · Response
{
"type": "object"
}Reviews
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